复数: smart alecs
noun
informal disapproving自诩聪明的人;好逞能的人 a person who thinks they are very clever and likes to show people this in an annoying way
...a fortyish smart-alec TV reporter...
年届不惑、自以为是的电视记者
You 'll end up no more than a smart alec and you 're well down that road already .
你最终只会变得自命不凡,而且你现在已经很有些自以为是了。
How much longer will it be before some smart alec from the building trade decides to replace conventional windows with electronic displays ?
但在建筑业那些自作聪明的人将传统的窗户改装成电子显示屏之前,人们抬头看世界的时间会有多长?